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JP2008515158A - Lighting device - Google Patents

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JP2008515158A
JP2008515158A JP2007534125A JP2007534125A JP2008515158A JP 2008515158 A JP2008515158 A JP 2008515158A JP 2007534125 A JP2007534125 A JP 2007534125A JP 2007534125 A JP2007534125 A JP 2007534125A JP 2008515158 A JP2008515158 A JP 2008515158A
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Prior art keywords
lighting device
light source
optical fiber
solid state
leds
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JP4931819B2 (en
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レイスウィック，マティアス ハー イェー ファン
コーテン，ウェイナンド エー イェー ファン
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Koninklijke Philips NV
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Koninklijke Philips Electronics NV
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K5/00—Lamps for general lighting
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0005—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being of the fibre type
    • G02B6/001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being of the fibre type the light being emitted along at least a portion of the lateral surface of the fibre
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • F21K9/232—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/61—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/66—Details of globes or covers forming part of the light source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/02—Globes; Bowls; Cover glasses characterised by the shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
    • F21V3/10—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by coatings
    • F21V3/12—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by coatings the coatings comprising photoluminescent substances
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2113/00—Combination of light sources
    • F21Y2113/10—Combination of light sources of different colours
    • F21Y2113/13—Combination of light sources of different colours comprising an assembly of point-like light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • General Physics & Mathematics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

本発明は、照明装置（１）に係る。当該照明装置は、エンベロープ（２）、口金（３）、固体光源（４）、及び光学手段（５）を有する。該光学手段は、光アウトカップリング表面を備えられ、固体光源は、該光学手段に対して光結合される。光学手段としての螺旋状に巻かれた光ファイバ、及び従来の電球と同様に形成される透明なエンベロープの使用により、炭素電球等の従来の白熱電球に大変類似する照明装置が与えられる。固体光源としてのＬＥＤの長寿命及び高効率性は、当該照明装置を、従来の白熱電球に対する非常に魅力的な代替品とする。本発明に従った照明装置は、例えば当該照明装置において赤色、緑色、及び青色のＬＥＤを使用することによって、広い範囲の色が選択且つ調整され得る、という更なる利点を有する。強度及び色設定を制御及び駆動する電子技術は、照明装置において組み込まれ得る。The present invention relates to a lighting device (1). The lighting device includes an envelope (2), a base (3), a solid light source (4), and optical means (5). The optical means is provided with a light outcoupling surface, and a solid state light source is optically coupled to the optical means. The use of a spirally wound optical fiber as the optical means and a transparent envelope formed similar to a conventional bulb provides a lighting device very similar to a conventional incandescent bulb, such as a carbon bulb. The long life and high efficiency of LEDs as solid state light sources make the lighting device a very attractive alternative to conventional incandescent bulbs. The lighting device according to the invention has the further advantage that a wide range of colors can be selected and adjusted, for example by using red, green and blue LEDs in the lighting device. The electronics that control and drive the intensity and color settings can be incorporated in the lighting device.

Description

本発明は、エンベロープ、口金、及び固体光源を有する、照明装置に係る。   The present invention relates to an illumination device having an envelope, a base, and a solid light source.

冒頭に説明される照明装置は、ＵＳ６，５８６，８８２（特許文献１）より既知である。特許文献１は、照明システムを開示し、該照明システムは、第１の波長範囲において、望ましくは青色光である光を放射する発光ダイオード等の光電子素子を有する。更には、該照明システムは、光電子素子によって放射される光を吸収し、第２の波長範囲において光を再放射するよう、変換手段を備えられる。変換手段は、螺旋コイルである本体上に与えられ得る。かかる照明システムは、周知の電球と同様に形成されるエンベロープを有し、炭素電球と似ている。   The illumination device described at the beginning is known from US 6,586,882. Patent Document 1 discloses an illumination system, which includes an optoelectronic element such as a light emitting diode that emits light, preferably blue light, in a first wavelength range. Furthermore, the illumination system is provided with conversion means for absorbing light emitted by the optoelectronic element and re-emitting light in the second wavelength range. The conversion means may be provided on the body which is a helical coil. Such an illumination system has an envelope formed similar to known bulbs and is similar to a carbon bulb.

特許文献１において開示される通り、該照明システムを有して炭素フィラメントに類似する高効率性を有することは可能ではあるが、かかる照明システムは、問題点を有する。該問題点とは、光電子素子によって放射される光が適切な波長を有する光へと変化される必要がある点、であり、該問題点は、複雑であり且つその効率性に害を及ぼす。更なる問題点は、エンベロープの内側上の複数層光学コーティングであり、該コーティングは、ＬＥＤから放射される光を変換手段に向かって反射するよう求められる。そのため、この照明システムは、複雑且つ効果なものとなる。
ＵＳ６，５８６，８８２ As disclosed in Patent Document 1, it is possible to have the illumination system and have high efficiency similar to that of a carbon filament, but such an illumination system has problems. The problem is that the light emitted by the optoelectronic device needs to be changed to light having an appropriate wavelength, which is complicated and detrimental to its efficiency. A further problem is a multilayer optical coating on the inside of the envelope, which coating is required to reflect the light emitted from the LED towards the conversion means. Therefore, this lighting system is complicated and effective.
US 6,586,882

本発明は、上述された問題点を有さず、且つ固体光源によって放射される光が照明の目的に対して直接使用される照明装置を与える、ことを目的とする。本発明の更なる利点は、当該照明装置によって生成され得る幅広い種類の色である。   The present invention aims to provide a lighting device that does not have the above-mentioned problems and in which the light emitted by the solid state light source is used directly for the purpose of lighting. A further advantage of the present invention is the wide variety of colors that can be produced by the lighting device.

本発明によれば、かかる目的は、光アウトカップリング表面を備えられる光学手段を更に有することを特徴とし、固体光源が該光学手段に対して光結合される照明装置によって、実現される。   According to the present invention, this object is achieved by an illumination device characterized in that it further comprises optical means provided with a light outcoupling surface, and a solid state light source is optically coupled to the optical means.

本発明は、固体光源を光学手段に対して光結合することによって、固体光源によって放射される光を光学手段に対して伝達することが可能である、という認識に基づく。かかる光学手段は、照明装置内に別個の素子を形成し、エンベロープと一体化されない。更には、光学手段は、光学手段からの光のアウトカップリングを可能にする表面を備えられなければならない。これは、光学手段の適切な表面粗さを選択することによって達成され得る。   The present invention is based on the recognition that it is possible to transmit light emitted by a solid state light source to the optical means by optically coupling the solid state light source to the optical means. Such optical means form a separate element in the lighting device and are not integrated with the envelope. Furthermore, the optical means must be provided with a surface that allows outcoupling of light from the optical means. This can be achieved by selecting an appropriate surface roughness of the optical means.

このようにして、本発明に従った照明装置は、固体光源によって生成されるスペクトル分布を有して、固体光源から光を放射する。   In this way, the lighting device according to the invention emits light from the solid state light source with a spectral distribution generated by the solid state light source.

望ましい一実施例では、固体光源は、少なくとも１つのＬＥＤを有する。ＬＥＤ（発光ダイオード）の使用は、現在の照明用途において広く行き渡っている。大きな入手可能性及び興味深い価格は、ＬＥＤをかかる種類の照明装置に対して望ましいものとする。１つのＬＥＤを使用することによって、照明装置の色は、ＬＥＤの選択によって決定される。例えば、琥珀色のＬＥＤを使用することによって、居間で使用される快適な光が作られ得る。   In a preferred embodiment, the solid state light source has at least one LED. The use of LEDs (light emitting diodes) is widespread in current lighting applications. Great availability and interesting prices make LEDs desirable for such types of lighting devices. By using one LED, the color of the lighting device is determined by the choice of LED. For example, the use of amber LEDs can create a comfortable light for use in the living room.

更なる一実施例では、固体光源は、作動中に異なる色を放射する３つのＬＥＤを有する。３つのＬＥＤの使用は、１９３１ ＣＩＥ色度図における広い色域から所望の色を選択する可能性を与える。即ち、該色度図には、全ての色が三角形によって囲まれており、頂点において３つのＬＥＤの色を有する。３つの異なる色のＬＥＤの間の強度の比率を変更することによって、かかる三角形内の全ての色が調整され得る。   In a further embodiment, the solid state light source has three LEDs that emit different colors during operation. The use of three LEDs gives the possibility to select the desired color from a wide color gamut in the 1931 CIE chromaticity diagram. That is, in the chromaticity diagram, all colors are surrounded by triangles and have three LED colors at the vertices. By changing the intensity ratio between the three different color LEDs, all the colors in such a triangle can be adjusted.

更なる実施例では、光学手段は、光ファイバを有し、螺旋状に巻かれ得る。光ファイバを使用することによって、多種の大変装飾的なランプが可能となる。ファイバの一端又は両端は、ＬＥＤに対して光結合されなければならない。３つのＬＥＤが使用される際、３つのＬＥＤに対して結合される光ファイバを１つのみ使用することは可能である。故に光ファイバは、３つのＬＥＤによって生成される混合色を受け、放射する。あるいは、各個別のＬＥＤに対して結合される別々の光ファイバを使用することは可能である。結果としてランプは、各々が異なる色の光を放射する３つの光ファイバを有する。光ファイバの一端又は両端を１つ又は複数のＬＥＤに対して結合することも、可能である。両端が結合される後者の場合、光ファイバにわたってより均質な配光が可能となる。   In a further embodiment, the optical means comprises an optical fiber and can be spirally wound. By using optical fibers, a great variety of very decorative lamps are possible. One or both ends of the fiber must be optically coupled to the LED. When three LEDs are used, it is possible to use only one optical fiber that is coupled to the three LEDs. Thus, the optical fiber receives and emits a mixed color generated by the three LEDs. Alternatively, it is possible to use separate optical fibers that are coupled to each individual LED. As a result, the lamp has three optical fibers that each emit light of a different color. It is also possible to couple one or both ends of the optical fiber to one or more LEDs. In the latter case where both ends are coupled, more uniform light distribution is possible across the optical fiber.

更なる一実施例は、蛍光体のコーティングを備えられる内側表面を有する、ことを特徴とする。   A further embodiment is characterized in that it has an inner surface provided with a phosphor coating.

蛍光体を有して内側表面をコーティングすることによって、１つのＬＥＤのみが使用される際でも、更に広い範囲の有色ランプを作ることが可能である。   By coating the inner surface with a phosphor, it is possible to create a wider range of colored lamps even when only one LED is used.

照明装置は、望ましくはねじ込み口金又は差込み口金を有する。   The lighting device preferably has a screw cap or a plug cap.

既存の電球の大半は、周知であるＥ１４，Ｅ２６又はＥ２７口金等のねじ込み口金、又は差込み口金を備えられる。本発明に従った照明装置に同一の種類の口金を与えることによって、既存の電球と互換性があるため、既存のランプは新しい照明装置と容易に取り替えられる。   Most of the existing light bulbs are provided with a screw-on base such as the well-known E14, E26 or E27 base, or a plug base. By providing the same type of base to the lighting device according to the present invention, the existing lamp can be easily replaced with a new lighting device because it is compatible with the existing light bulb.

更には、照明装置の口金は、固体光源を駆動する電源を備えられる電子駆動手段を有し得る。この電子駆動手段は、照明装置の本線電圧入力を、固体光源を駆動するよう適切である出力値へと移す。追加的には、電子駆動手段は、前出の照明装置の色及び／又は光出力を制御するよう配置される制御ユニットを備えられる。この特性は、光の強度の制御（調光特性）及び／又は照明装置の色の制御を可能にする。例えば、この制御は、遠隔制御ユーザインタフェースを用いて実行され得る。   Furthermore, the base of the illuminating device may have electronic driving means provided with a power source for driving the solid state light source. This electronic drive means shifts the mains voltage input of the lighting device to an output value that is appropriate to drive a solid state light source. Additionally, the electronic drive means is provided with a control unit arranged to control the color and / or light output of the above lighting device. This characteristic allows control of the light intensity (dimming characteristics) and / or the color of the lighting device. For example, this control can be performed using a remote control user interface.

本発明のこれらの及び他の態様は、図面及び以下に説明される実施例を参照する非制限的な例を用いて、明らかに説明される。   These and other aspects of the present invention will be clearly described using non-limiting examples with reference to the drawings and examples described below.

図１は、本発明に従った照明装置１の一例を示す。当該照明装置は、例えば周知の電球に使用されるガラス球である、エンベロープ２を有する。固体照明装置が真空エンベロープ２を必要としない、ことは留意されるべきである。エンベロープ２はまた、空気又は他の気体を有し得る。エンベロープ２は、既存の電球との互換性をなすよう、外側にねじ込み口金８又は差込み口金として形成される口金３に対して、接続される。   FIG. 1 shows an example of a lighting device 1 according to the invention. The illuminating device has an envelope 2 which is a glass bulb used for a well-known light bulb, for example. It should be noted that the solid state lighting device does not require a vacuum envelope 2. The envelope 2 may also have air or other gas. The envelope 2 is connected to a base 3 formed on the outside as a screw base 8 or a plug base so as to be compatible with existing light bulbs.

照明装置１の内部は、固体光源４、及び電子駆動手段７を有する。固体光源４は、１つ又はそれ以上のＬＥＤ等であり、電子駆動手段７は、本線電圧入力（２３０Ｖ ＡＣ又は１１０Ｖ ＡＣ）を固体光源４を駆動するよう適切である信号へと変換する。   The interior of the lighting device 1 includes a solid light source 4 and electronic driving means 7. The solid state light source 4 is one or more LEDs or the like, and the electronic drive means 7 converts the mains voltage input (230V AC or 110V AC) into a signal that is suitable for driving the solid state light source 4.

照明装置１は更に、固体光源４に対して結合される光ファイバ５を有する。作動中、固体光源４は、光を放射し、この光を光ファイバ５へと伝達する。光ファイバ５は、光アウトカップリング表面を備えられ、該表面によって光は光ファイバ５から放射される。かかる光アウトカップリング表面は、光ファイバ５がその表面にわたって均質に光を放射するよう、設計され得る。あるいは、螺旋状に巻かれた光ファイバに関しては、螺旋部分５２からは比較的より多くの光を放射し、螺旋部分５２と固体光源４との間に接続を形成する部分５１からはより少ない光を放射するよう、設計され得る。これは、例えば光ファイバ５に沿った表面粗さの選択によって達成され得る。このようにして、ファイバに沿った放射は、炭素電球の放射に非常によく似る。   The illumination device 1 further comprises an optical fiber 5 that is coupled to the solid state light source 4. In operation, the solid state light source 4 emits light and transmits this light to the optical fiber 5. The optical fiber 5 is provided with an optical outcoupling surface by which light is emitted from the optical fiber 5. Such an optical outcoupling surface can be designed so that the optical fiber 5 emits light uniformly over the surface. Alternatively, for a helically wound optical fiber, relatively more light is emitted from the helical portion 52 and less light is emitted from the portion 51 that forms a connection between the helical portion 52 and the solid state light source 4. Can be designed to radiate. This can be achieved, for example, by selection of surface roughness along the optical fiber 5. In this way, the radiation along the fiber is very similar to that of a carbon bulb.

図１中、光ファイバ５の両端１０は、固体光源４に対して接続される。固体光源４によって放射される光は、両側上で光ファイバ５に入り、光ファイバ５にわたってより均質な配光をもたらす。あるいは、光ファイバ５の端部１０のうち一端のみは、固体光源４に対して光結合され得、他端１０は、固体光源４と光学的に接触しない。   In FIG. 1, both ends 10 of the optical fiber 5 are connected to the solid light source 4. The light emitted by the solid state light source 4 enters the optical fiber 5 on both sides, resulting in a more homogeneous light distribution over the optical fiber 5. Alternatively, only one end of the end portion 10 of the optical fiber 5 can be optically coupled to the solid light source 4, and the other end 10 is not in optical contact with the solid light source 4.

更なる選択は、光ファイバ５の両端１０を固体光源４の異なるＬＥＤに対して光結合し、照明装置１のより高い光出力を可能にする、ことである。   A further option is to optically couple both ends 10 of the optical fiber 5 to different LEDs of the solid state light source 4 to allow a higher light output of the lighting device 1.

図１中の実施例では、光源が直視されることを防ぐシールド９は、固体光源４を取り囲む。   In the embodiment in FIG. 1, a shield 9 that prevents the light source from being viewed directly surrounds the solid state light source 4.

エンベロープ２が透明なガラスを有して作られる場合、この照明装置１は、高い装飾的価値を有する。琥珀色のＬＥＤ及び螺旋状に巻かれた光ファイバを使用することによって、この照明装置１は、快適な雰囲気を作り出すようしばしば使用される周知の炭素電球に非常によく似る。炭素電球は、高価且つ脆弱であり、発光効率が大変低い、という欠点を有する。本発明に従った照明装置１は、かかる欠点を克服する。当該照明装置は、快適な雰囲気を作り出すよう使用され、同時に高い光出力を与え、非常に長い寿命も有する。比較として、琥珀色のＬＥＤは、２０−４０ｌｍ／Ｗの典型的な発光効率及び７５，０００時間を超える寿命を有するのに対し、炭素電球は、２−３ｌｍ／Ｗの発光効率及び１０００時間より短い寿命を有する。これによって、かかる種類の照明装置は、低いサービスコスト及び低いエネルギ消費を有することが非常に重要である専門的な装飾的用途に対して、特に適切とされる。   If the envelope 2 is made of transparent glass, the lighting device 1 has a high decorative value. By using an amber LED and a spirally wound optical fiber, this lighting device 1 is very similar to the well-known carbon bulb often used to create a comfortable atmosphere. Carbon bulbs have the disadvantages of being expensive and fragile and having very low luminous efficiency. The lighting device 1 according to the invention overcomes this drawback. The lighting device is used to create a comfortable atmosphere, at the same time gives a high light output and also has a very long lifetime. For comparison, amber LEDs have a typical luminous efficiency of 20-40 lm / W and a lifetime of more than 75,000 hours, whereas carbon bulbs have a luminous efficiency of 2-3 lm / W and more than 1000 hours. Has a short lifetime. This makes such types of lighting devices particularly suitable for professional decorative applications where it is very important to have low service costs and low energy consumption.

照明装置１において組み込まれ得る更なる特徴は、エンベロープ２の内側上に与えられる蛍光体を有するコーティング６である。コーティング６は、固体光源４から放射される光の色を変更することができる。更には、（エンベロープ２がバルブ型である際の）照明装置１の外見は、拡散性の白熱電球（ｄｉｆｆｕｓｅ ｉｎｃａｎｄｅｓｃｅｎｔ ｌａｍｐ）に類似する。かかる照明装置は、白熱電球を取り替えるよう大変適切である。   A further feature that can be incorporated in the lighting device 1 is a coating 6 having a phosphor provided on the inside of the envelope 2. The coating 6 can change the color of light emitted from the solid light source 4. Furthermore, the appearance of the lighting device 1 (when the envelope 2 is bulb-type) is similar to a diffusive incandescent lamp. Such a lighting device is very suitable for replacing incandescent bulbs.

図２及び図３は、３つのＬＥＤ４１，４２，４３を有する固体光源を有する実施例を示す。かかる３つのＬＥＤ４１，４２，４３は、例えば赤色、緑色、及び青色である３つの異なる色を望ましくは有する。続いて、頂点において３つのＬＥＤの色を有する１９３１ＣＩＥ色度図の色三角形に従う全ての色に対して、照明装置１を調整することが可能である。これは特に、多種の白色の設定の選択を可能にする。   2 and 3 show an embodiment having a solid state light source having three LEDs 41, 42, 43. The three LEDs 41, 42, 43 desirably have three different colors, for example red, green and blue. Subsequently, it is possible to adjust the lighting device 1 for all the colors according to the color triangle of the 1931 CIE chromaticity diagram with three LED colors at the apex. This in particular allows the selection of various white settings.

図２中、３つのＬＥＤ４１，４２，４３によって放射される光は、例えば光ファイバである光学手段５に入る前に混合される。３つの色は、上部上に置かれ且つＬＥＤ４１，４２，４３と光学的に接触する光散乱素子１１によって、混合され得る。光ファイバの端部１０は、均質に混合された光をピックアップするよう光散乱素子１１と光学的に接触する。   In FIG. 2, the light emitted by the three LEDs 41, 42, 43 is mixed before entering the optical means 5, for example an optical fiber. The three colors can be mixed by the light scattering element 11 placed on top and in optical contact with the LEDs 41, 42, 43. The end 10 of the optical fiber is in optical contact with the light scattering element 11 to pick up the homogeneously mixed light.

図３中、光ファイバは、固体光源４の各ＬＥＤ４１，４２，４３に対して適用される。光ファイバは、各ＬＥＤ４１，４２，４３に対して、１つのみのＬＥＤの場合と同様に結合され得る。照明装置１は、各々が異なる色の光を放射する３つの光ファイバを有するため、更により高い装飾的価値を有する。   In FIG. 3, the optical fiber is applied to each LED 41, 42, 43 of the solid light source 4. An optical fiber can be coupled to each LED 41, 42, 43 as in the case of only one LED. The lighting device 1 has an even higher decorative value because it has three optical fibers each emitting different colors of light.

一般的に使用される白熱電球に対する代替品として本発明に従った照明装置１が使用され得ることは、有利である。それ故に、照明装置１の口金３がねじ込み口金又は差込み口金である、ことは望ましい。特には、Ｅ１４，Ｅ２６又はＥ２７型のねじ込み口金は、電球に対して頻繁に使用される。   It is advantageous that the lighting device 1 according to the invention can be used as an alternative to commonly used incandescent bulbs. Therefore, it is desirable that the base 3 of the lighting device 1 is a screw base or a plug base. In particular, E14, E26 or E27 type screw caps are frequently used for light bulbs.

照明装置１が標準的な白熱電球と完全に互換であるよう、照明装置１が電子駆動手段７を有することが求められる。電子駆動手段７は、（通常２３０Ｖ ＡＣ又は１１０Ｖ ＡＣである）本線電圧供給を、通常は約２Ｖ ＤＣである固体光源４を駆動するよう適切である出力信号へと変換する電源を備えられる。追加的に、電子駆動手段７は、照明装置１の色及び強度（又は光出力）の設定を制御するよう、電子回路を有し得る。色及び強度は、遠隔制御ユニット、口金３上のボタン、又は他の種類のユーザインタフェースによって制御され得る。これを達成するよう、駆動手段７は、電源、並びに強度及び色設定に対する制御ユニットを有し得る。かかる電子駆動手段は、口金３において与えられ得る。   The lighting device 1 is required to have electronic drive means 7 so that the lighting device 1 is fully compatible with a standard incandescent bulb. The electronic drive means 7 is provided with a power supply that converts the mains voltage supply (usually 230V AC or 110V AC) into an output signal suitable to drive the solid state light source 4 which is usually about 2V DC. In addition, the electronic drive means 7 may comprise an electronic circuit to control the color and intensity (or light output) settings of the lighting device 1. Color and intensity may be controlled by a remote control unit, a button on the base 3 or other type of user interface. To achieve this, the drive means 7 can have a power supply and a control unit for intensity and color settings. Such electronic drive means can be provided at the base 3.

本発明は、透明のエンベロープ、又は内側を蛍光体でコーティングされたエンベロープを有する従来の電球上に形成され、また標準的な口金を備えられる照明器具に制限されない。本発明はまた、例えば管の両端においてコネクタを有する管状の電灯に対して適用可能であるが、互換性のない照明装置も考えられ得る。   The present invention is not limited to a luminaire formed on a conventional bulb having a transparent envelope or an envelope coated with phosphor on the inside and provided with a standard base. The present invention is also applicable to, for example, tubular lamps having connectors at both ends of the tube, but incompatible lighting devices can also be considered.

要約すると、本発明は、照明装置１に係る。当該照明装置は、エンベロープ２、口金３、固体光源４、及び光学手段５を有する。該光学手段は、光アウトカップリング表面を備えられ、固体光源は、光学手段５に対して光結合される。光学手段５としての螺旋状に巻かれた光ファイバ、及び従来の電球と同様に形成される透明なエンベロープ２の使用により、炭素電球等の従来の白熱電球に大変類似する照明装置が与えられる。固体光源４としてのＬＥＤの長寿命及び高効率性は、当該照明装置１を、従来の白熱電球に代わる非常に魅力的なものとする。本発明に従った照明装置１は、例えば当該照明装置において赤色、緑色、及び青色のＬＥＤを使用することによって、広い範囲の色が選択且つ調整され得る、という更なる利点を有する。強度及び色設定を制御及び駆動する電子技術は、照明装置１において組み込まれ得る。   In summary, the present invention relates to a lighting device 1. The lighting device includes an envelope 2, a base 3, a solid light source 4, and optical means 5. The optical means is provided with a light outcoupling surface, and the solid state light source is optically coupled to the optical means 5. The use of a spirally wound optical fiber as the optical means 5 and a transparent envelope 2 formed in the same way as a conventional bulb provides a lighting device very similar to a conventional incandescent bulb such as a carbon bulb. The long life and high efficiency of the LED as the solid light source 4 make the lighting device 1 very attractive to replace conventional incandescent bulbs. The lighting device 1 according to the invention has the further advantage that a wide range of colors can be selected and adjusted, for example by using red, green and blue LEDs in the lighting device. The electronics that control and drive the intensity and color settings can be incorporated in the lighting device 1.

本発明に従った照明装置を概略的に図示する。1 schematically illustrates a lighting device according to the invention. ３つのＬＥＤ及び１つの共通の光ファイバを有する、本発明に従った一実施例を図示する。1 illustrates one embodiment according to the present invention having three LEDs and one common optical fiber. 各々が別個の光ファイバを有する３つのＬＥＤを有する、本発明に従った一実施例を図示する。Fig. 4 illustrates an embodiment according to the present invention having three LEDs, each having a separate optical fiber.

Claims (12)

照明装置であって、
エンベロープと、口金と、固体光源と、を有し、
前記照明装置は、光アウトカップリング表面を備えられる光学手段を更に有し、前記固体光源は、前記光学手段に対して光結合される、ことを特徴とする、
照明装置。 A lighting device,
An envelope, a base, and a solid light source;
The illumination device further comprises optical means provided with a light outcoupling surface, and the solid state light source is optically coupled to the optical means,
Lighting device. 前記固体光源は、少なくとも１つのＬＥＤを有する、ことを特徴とする、
請求項１記載の照明装置。 The solid-state light source has at least one LED,
The lighting device according to claim 1. 前記固体光源は、作動中、異なる色の光を放射する３つのＬＥＤを有する、ことを特徴とする、
請求項２記載の照明装置。 The solid state light source has three LEDs that emit light of different colors during operation,
The lighting device according to claim 2. 前記光学手段は、光ファイバを有する、ことを特徴とする、
請求項１乃至３記載の照明装置。 The optical means includes an optical fiber,
The lighting device according to claim 1. 前記光学手段は、前記３つのＬＥＤの各々に対して光ファイバを有する、ことを特徴とする、
請求項３記載の照明装置。 The optical means has an optical fiber for each of the three LEDs.
The lighting device according to claim 3. 前記光ファイバは、螺旋状に巻かれる、ことを特徴とする、
請求項４又は５記載の照明装置。 The optical fiber is wound in a spiral shape,
The lighting device according to claim 4 or 5. 前記光ファイバは、２つの端部を備えられ、前記２つの端部のいずれも前記固体光源に対して結合される、ことを特徴とする、
請求項４乃至６記載の照明装置。 The optical fiber is provided with two ends, both of the two ends being coupled to the solid state light source,
The lighting device according to claim 4. 前記固体光源は、各光ファイバに対して２つのＬＥＤを有し、前記ＬＥＤは前記光ファイバの前記端部に対して結合される、ことを特徴とする、
請求項７記載の照明装置。 The solid state light source has two LEDs for each optical fiber, the LEDs being coupled to the end of the optical fiber,
The lighting device according to claim 7. 前記エンベロープは、蛍光体を有するコーティングを備えられる内側表面を有する、
請求項１乃至３記載の照明装置。 The envelope has an inner surface provided with a coating having a phosphor;
The lighting device according to claim 1. 前記口金は、ねじ込み口金又は差込み口金である、ことを特徴とする、
請求項１乃至９のうちいずれか一項記載の照明装置。 The base is a screw base or an insertion base, characterized in that
The lighting device according to any one of claims 1 to 9. 前記固体光源を駆動するよう電源を備えられる電子駆動手段を有する、ことを特徴とする、
請求項１乃至１０のうちいずれか一項記載の照明装置。 It has electronic driving means equipped with a power source to drive the solid state light source,
The illumination device according to any one of claims 1 to 10. 前記電子駆動手段は、前記照明装置の光の出力及び／又は色を制御するよう配置される制御ユニットを更に備えられる、ことを特徴とする、
請求項１１記載の照明装置。 The electronic drive means further comprises a control unit arranged to control the light output and / or color of the lighting device,
The lighting device according to claim 11.
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